400-490 MHz Narrowband duplexers DPF4-4U, DPF4-6U : IK-Telecom
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400-490 MHz
Narrowband duplexers DPF4-4U, DPF4-6U

DPF4-4U

DPF4-6U
Electrical specifications
Model DPF4-4U DPF4-6U
Operating Frequency band, MHz 400-490
Insertion loss (adjustable) not more, dB 1 1,5
Frequency separation TX/RX (min), MHz 5
Impedance, Ohm 50
Isolation, not less, dB 45 60
VSWR, not more than 1,5
Input power, not more, W not more than 200
Temperature range, °C from -30 to +60
Cavity electrical length 1/4λ
Mechanical specifications
Model DPF4-4U DPF4-6U
Diameter, mm (ins.) 110 (4")
Weight, kg 5,8 8,4
Connector N-female
Mount to 19-inch rack yes
Length/Width/Depth, mm 360x480x225

Duplexer DPF4-4U will be quite effective in case your frequency plan assumes 10 MHz separation between receiving and transmission frequency, the number of channels is rather small, and they occupy not more than 1 MHz band. Channel bandwidth will rise up to 1.5 MHz after installation of six cavities; gain slope will be improved also.


Typical duplexers response curves

DPF4-4U

DPF4-6U

Finland, Pulsa